Philips AS660C/41 - Page 109

10-6
WARNING
CHARGED
CAPACITORS
ON
THE
SERVO.BOARD
MAY
DAMAGE
THE
CD
DRIVE
ELECTRONICS
WHEN
CONNECTING
A
NEW
CDM
MECHANISM.
THAT’S
WHY,
BESIDES
THE
SAFETY
MEASURES
LIKE
*
SWITCH
OFF
POWER
SUPPLY
¢ ESD PROTECTION
ADDITIONAL
ACTIONS
MUST
BE
TAKEN
BY
THE-REPAIR
TECHNICIAN.
The
following
steps
have
to
be
done
when
replacing
the
CDM
mechanism:
.
Disconnect
old
CD
drive
flexfoil
from
printed
board
.
Connect
paperclip
to
CD
drive
flexfoil
to
short-circuit
flexfoil
(fig.1)
.
Short-circuit
printed
board
with
brass-sheet
(4822
321
11197)
plugged
into
the
flexfoil
connector
(fig.2)
.
Remove
old
CD
drive
mechanism
.
Position
new
CD
mechanism
in
its
studs
. Remove short-circuit from printed board connector
.
Remove
short-circuit
from
flexfoil
of
new
CD
drive
. Connect new flexfoil to print connector (fig.3)
ONAAROND=
fig.1 fig.2
Service Position
CS 53 005